Strangely enough, “wimpy” was early 20th century British slang for a hamburger, which somewhere in the 1930’s became American slang for an ineffectual person, to the consternation of the OED. My kids, courtesy of Dollar Tree, have been exposed to pre-WWII Popeye cartoons, in which a character named “Wimpy” has a British accent and an addiction to hamburgers. He also accomplishes a lot while appearing quite ineffectual, getting Popeye to do all the hard work for him. If we view Popeye as a stereotype for the US, many of these pre-WWII cartoons can be reinterpreted as complex political commentary. Commentary that now extends to cosmology and astrophysics.
When cosmologists could not explain why galaxies formed out of the the hot gas of the Big Bang, they proposed a mysterious “dark matter” that was attracting the gas and making stars, but was itself invisible to telescopes. Two possibilities presented themselves: the matter was invisible to telescopes because it was “dark”; and the matter was invisible to telescopes because it was transparent.